Can I use more than one realtor to help us find a home?

A realtor had connections to a broker who helped my husband and I secure a FHA loan just so she could represent us in our new home purchase. Now I feel obligated to use her to find our new home, but my husband wants to go with someone totally different and to just mail here a thank you card with $100. I told it would be wrong to not use her after all she has done for us. What do you think? Any suggestions?

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